20312440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16381}}^1$

素因数の和:16423

約数の個数: 32

約数和(自身を含む): 47180160

約数和(自身を除く): 26867720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16381, 32762, 65524, 81905, 131048, 163810, 327620, 507811, 655240, 1015622, 2031244, 2539055, 4062488, 5078110, 10156220, 20312440]

約数ペア:

[(1, 20312440), (2, 10156220), (4, 5078110), (5, 4062488), (8, 2539055), (10, 2031244), (20, 1015622), (31, 655240), (40, 507811), (62, 327620), (124, 163810), (155, 131048), (248, 81905), (310, 65524), (620, 32762), (1240, 16381)]